Question

2) (Valor 2,5) Dada a função f(x) = -2x2 + 3x + 2 e calcule:
a) f(-2)
b) f(-1)
c) f(0)
d) f(1)
e) f(2)​

Answer 1

Explicação passo-a-passo:

f(x)= - 2x² +3x +2

f(-2) = -2.(-2)² +3.(-2) +2

f(-2)= -2.4 - 6 +2

f(-2)= -8-6+2

f(-2)= -14 +2

f(-2) = - 12

f(-1)= -2.(-1)² +3.(-1) +2

f(-1)= - 2.1 -3 +2

f(-1)= -2-3+2

f(-1)= -3

f(0)= -2.0² +3.0 +2

f(0)= 0+0+2

f(0)= 2

f(1)= - 2.1²+3.1+2

f(1)= -2 +3+2

f(1)= 3

f(2)= -2.2² +3.2 +2

f(2)= -2.4 +6 +2

f(2)= -8+6+2

f(2)= -8+8

f(2)= 0